package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetMealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Set;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetMealDishMapper setMealDishMapper;

    @Autowired
    private DishMapper dishMapper;

    @Override
    @Transactional
    public void insert(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);

        setmealMapper.insert(setmeal);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        Long setmealId = setmeal.getId();
        for (SetmealDish setmealDish : setmealDishes) {
            setmealDish.setSetmealId(setmealId);
        }
        setMealDishMapper.insert(setmealDishes);
    }

    @Override
    public PageResult page(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.page(setmealPageQueryDTO);
        PageResult pageResult = new PageResult(page.getTotal(), page.getResult());
        return pageResult;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        if (status == StatusConstant.ENABLE) {
            List<Dish> dishList = dishMapper.selectBySeatmealId(id);
            for (Dish dish : dishList) {
                if(dish.getStatus()==StatusConstant.DISABLE){
                    String dishName = dish.getName();
                    throw new SetmealEnableFailedException("套餐中包含了未起售的商品:"+dishName+",该套餐不能起售");
                }
            }
        }

        Setmeal setmeal = new Setmeal();
        setmeal.setStatus(status);
        setmeal.setId(id);
        setmealMapper.update(setmeal);
    }

    @Override
    @Transactional
    public void deleteByIds(List<Long> ids) {
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus().equals(StatusConstant.ENABLE)) {
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        setmealMapper.deleteByIds(ids);
        setMealDishMapper.deletebySetmealIds(ids);

    }

    @Override
    public SetmealVO getById(Long id) {
        Setmeal setmeal = setmealMapper.getById(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal, setmealVO);
        List<SetmealDish> setmealDishes = setMealDishMapper.getBySeatmealId(id);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    @Override
    @Transactional
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.update(setmeal);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();

        setMealDishMapper.deletebySetmealIds(List.of(setmealDTO.getId()));
        for (SetmealDish setmealDish : setmealDishes) {
            setmealDish.setSetmealId(setmealDTO.getId());
        }
        setMealDishMapper.insert(setmealDishes);
    }


    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
